Agar Agar Bacteriological Grade is available in 3 grades based on their different parameters. Marine Chemicals manufactures Agar Agar Bacteriological Grade. Marine Chemicals also manufactures Agar Agar in Pharmaceutical Grade and food grade in strips, powder and shred form. Agar Agar Bacteriological Grade comes in standard grade, super grade and superfine grade. This grade is used for microbiology, plant tissue culture and culture media preparation.